Fuel burner nozzle



March 22, 1932,

Filed Aug. 30. 1927 2 Sheets-Sheet a Z m M 8 9 AM m: Q. m i w] l 7. l W.m wmwm 1+ 2 n l wm n W. 1 z 4 v a I w 1 i MM Q n. m A 6 W 1 w H 3 3 8 36 w [Mum 4 1 0 5 1/ w o av? o III 1||1| .2 6 2 March 1932- F. J. WERNER1,850,274

' FUEL BURNER NOZZLE Filed Aug. 50. 1927 2 Sheets-Sheet 2 InventorAttorney Patented Mar. 22,1932

UNITED STATES.

FRANK J. WERNER, PORTAGE TOWNSHIP, PORTER. COUNTY, INDIANA FUEL BURNERNOZZLE Application filed August so, 1927. Serial No. 216,489,

v tric cross section of the delivery openings produces uniformcombustion throughout the 360' degrees of the openings; that'by reasonof the concentric relation of the openings prevents the distortion ofthe burner parts,

" 39 such distortion inevitably occurs when the delivery openlngs formanon-concentr1c exit zone, a condition that subjects the burner partsimmediately adjacent the exits to dis similar expansions or contractionsthus ac 4 centuating the uneven distribution of the burner flame; thatprovides means for adjusting the size of the final burner opening; andthat retains a uniform-cross section of each of the three passage ordelivery outi lets.

With these and other ends in view, I illustrate in theaccompanyingdrawings such instances of adaptationv as will disclose thebroad underlying features of my invention without limiting myself to thespecific details shown thereon and described herein.

Figure 1 is a side elevation in section show ing parts broken away.

. Fig. 2 is a top plan view of Fig. 1, partly in section.

Fig. 3 is a front elevation in. section on line 33 of Fig. 1.

Fig. 4 is sectional elevation similar to Fig. 1 showing positivecentering means located immediately at the outlets, leavingconc'entricchambers back of these outlets.

Fig. 5 is a sectional view, similar to Fig.

4 but with'the central tube removed. 1 I Fig. 6 is a modification of theform of the central tube.

, a In adapting my invention to the different conditions of actualpractice, I may use'whatever alternatives of construction that theexigencies of such conditions maydemand without departing from the broadspirit of my '55 invention, which in its relation to the use ofdifferent kinds of fuels in the same burner is illustrated and describedin my co-pending application, Serial No.17 17,034, filed May ,7 31,1924, which has matured into Patent #1,783-,8 18, on December 2, 1930.

The failure of fuel burners, especially of the high capacity. type asfound in actual practice prior to my invention, is fundamentally due tothe fact that there has been no provision for maintaining a trueconcentric relation between the different parts of the burner nozzlethat define the exit passages, which feature forms a partof my invention7, above referred to. r

The burner nozzle in the main consists of a central tube 1. This tubehas a threaded rear end 2on which the inlet pipe 33 is threaded. -It hasan enlarged diameter shoulder 4 in which spanner openings 45 are formed.About midway its length it is threaded externally at 3 to receive thethreaded portion of the rear wall 9. Fromthe threaded portion '3 forwarda reduced diameter 5 is' formed; which serves to absolutely center andhold 1 the adjacent parts in permanent concentric relation. At the frontend of the portion 5 the tube is reduced in diameter at6, which portionterminates in a beveled front end 7. A bushing8 having 'a reversedconical restricted opening 40 may be placed in the front end of the tube1, as needed.

The rear nozzle wall 9 has an external threaded portion 10 on which thenozzle cap 11 is threaded and a concentric tubular forward extension 46which connects the rear wall 9 with a central partition 12., This wallcontinues forward in a gradually reducing diameter indicated by 15.Outside of the wall 46 an annular chamber 13 is formed and inside ofthis wall an annular chamber 14 is formed. The chamber 13 is bounded bythe walls 9, 46, partition 12, and cap 11,whi1e the inner chamber 14 isbounded by the walls 9 and 46, the partition 12 and the tube 1. A

series of openings 18 lead from the chamber 13 to curved externalchambers 17 and openings 19 lead from the chamber 14 to internal curvedchambers 16.

In order that the annular outlet 24 from the chambers 16 and the annularoutlet 23 from the chambers 17 may be held in permanent concentricrelation to each other and the tube 1, internal ribs 21 extend from thecurving wall 15 in a radial direction into close con tact with theportion 5, as instanced at 42, against he tube 1. To also maintain theconcentric relation of the outlet 22 of the cap 11,

the cap engages the outside diameter of the partition 12 and issupported between the partition 12 and the outlet 22 by means of ribs 20extending radially outward from the curved wall 15 into close engagementwith the inner surface of the cap 11, as instanced at 41. Advantageousresults are secured by making the cross sectional area of the annularoutlets 23, 24 and 25 substantially the same, but the broad feature ofmy invention resides in the permanent maintenance of the concentricrelation of the burner outlets.

A rear casing 26 passes over the unthreaded portion 35 of the nozzlewall 9. It has a central opening 47 engaged by the shoulder 4 of thetube 1. The inlet tube 33 is also. found in this opening. Diametricallyoppositely positioned openings 27 serve inlet tubes 28 and 29respectively. The tube 28 is threaded into the nozzle wall 9 and itcommunicates with the inner chamber 14 through openings 30; and the tube29 is similarly threaded into the nozzle wall 9, it, however, leads intochamber 13 through openings 31. A locking ring 34 on the tube 33 servesto hold the casing 26 assembled against the nozzle wall 9. A lockingring 32 threaded onto the portion 3 of the tube 1 serves to hold thedelivery end of the tube 1 in a predetermined relation to the exits 22,23 and 24.

Spanner openings 43 in the cap 11, 44 in looking ring 32, 45 inenlargement 4, and similar openings in the locking ring 34 serve theusual purpose of these expedients in facilitating the assembly of thedifferent parts of the burner. The rear portion of the nozzle wall 9 isrecessed at 36 on each side, as shown in Figs. 2 and 3,toform'abuttingfaces which serve to hold the nozzle by means of awrench, or otherwise, while the cap 11 is threaded onto the portion 10as far as the engaging faces 41 of the external ribs 20 will permit. I

It will be seen from Figs. 4 and 5 that the means for holding theopenings 23, 24 and 25 in fixed spaced-apart relation may be placed atthe front of the chambers 16 and 17. By shortening the ribs 20 and 21 asshown in Figs. 4 and 5 or rather omitting them adjacent the wall12 thereis formed an annular chamber 51 between the nozzle walls 11 and 15 andan inner annular chamber 52 between the curving wall 15 and the innertube 5. This is accomplished by forming short radial projections 48 onthe inside of the wall 15 which terminate in contact with the tubeportion 6 of the tube 5, or the portion 50 of the modified tube shown inFig. 6. This relation of parts positively holds the opening 25concentric with the tube.

The outer nozzle shell 11 is similarly provided with short radialprojections 49 which terminate against the curving wall 15. Thispositively holds the opening 22 concentric with the tube and at the sametime holds the opening 23 between the ends of walls 11 and 15 indefinite spaced apart unobstructed concentric relation, so that theannular'openings 22 and 25 and the lateral opening 23 are always in thesame operative relation. The inner ends of the projections 48 are boredout to the diameter of the tube 5 which fits snugly against them and theinside of the projections 49 are made to conform to the outer surface ofthe curving wall 15. If desired the projections 49 may be formed on thewall 15 and their outer edges made to conform and engage the innersurface of the shell 11. The exact form of the projections 48 and 49, asshown, is not material; the only element of importance is that rigidly.9 engaging means be used to hold the openings 22, 23 and 25 inunvarying spaced apart relation.

What I claim is:

1. A fuel burner adapted to utilize ditlerent fuels, said burnercomprising a plurality of inlet tubes, an internal centering tube, anintermediate cylindrical dividing wall, an external cap having a centralopening, external ribs from the dividing wall to the cap; internal ribsfrom said wall to the tube, the tube, the division wall and cap being inspaced apart relation to form exit openings therebetween; and means fordelivering a combustion maintaining supply between the dividing wall andthe cap, the dividing wall and the tube, and independently thereofthrough the interior of the tube.

2. A fuel burner comprising a central tube, 115 a nozzle member spacedapart from the tube,

an external cap spaced apart from the nozzle 5 integral means projectingfrom the dividing permanent concentric and lineal spaced apart relationimmediately at their outlet.

4. In fuel burners, an internal tube, an

external cap having an opening of slightly larger diameter than theadjacent external diameter of the tube, a nozzle member positionedbetween the cap and the tube, a cylindrical dividing wall of the nozzlemember terminating in a delivery opening slightly larger than theadjacent external diameter of the tube, internal projections from thedividing wall to the tube, external projections from the dividing wallto the cap said projections serving to positively position the parts inconcentric relation with each other immediately at their outlet, andmeans for holding them in assembled relation.

5 In multiple'purpose fuel burners, an inner tube, a nozzle membersupported by the tube, an external cap having a reduced size opening atits front end supported by the nozzle member, a dividing wall of thenozzle member between the cap and the tube forming a plurality ofchambers therebetween,

wall internally into engagement with the tube and externally intoengagement with the cap adapted to position the parts in contact witheach other in concentric relation, and means adjacent the end of thedividing wall and nozzle member for positively holding these partsassembled on the tube in a fixed spaced-apart relation immediately attheir outlet. 7

6. In fuel burners, a central tube having a reduced diameter exterior atits front end, a nozzle surrounding the tube forming an interior chamberhaving an opening adjacent the reduced exterior diameter of the tube, anexternal cap surrounding the nozzle forming an exterior chamber alsoopening adjacent the end of the tube, and means for concentricallyholding the nozzle spaced apart from the tube and the cap spaced apartfrom the nozzle.

7. In fuel burners, a central tube, a nozzle surrounding the tubeforming a partition wall between interior and exterior chambers havingopenings adjacent the exterior surface of the tube near its 'front end,an external 1 cap surrounding the nozzle, the outer chamber, and thetube, said cap having a central opening adjacent the tube end, and meansfor concentrically holding the nozzle spaced apart from the tube and thecap spaced apart from the nozzle and tube.

In testimony whereof I affix my signature.

FRANK J. WERNER.

